There are a lot of places to watch the sunset in Montreal. None like the view that you will see on the south shore of Montreal, as you will always have the Montreal Skyline and the Mont-Royal Mountain in the background as the sun is setting.
If you are visiting the city it is definitely a spot to consider, and it is amazing to take some photos from there.
Longueuil has a really nice area called old Longueuil, Le Vieux Longueuil it is a great spot for eating, dinning, and walking around.
What makes this place more exceptional for me, is that view that you can get of the city of Montreal from there.
It is the only place where you can see the Jacques Cartier Bridge with the City of Montreal in the back.
Here are some pictures from the old city of Longueuil and of the view of Montreal from Longueuil.
To see more picture of Montreal Skyline Sunset from the south shore – Check these photos
For some photos of park close to Montreal and Longueuil Check out National Park of Yamaska Photos